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Finding the Fourth Proportional to 5,356.76, 8,034.82 and 1,408.01

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Solution

The fourth proportional to 5,356.76, 8,034.82 and 1,408.01 is: 2,111.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,356.76 : 8,034.82 = 1,408.01 : x
  2. Step 2: Convert to fraction form
    5,356.76/8,034.82 = 1,408.01/x
  3. Step 3: Cross multiply
    5,356.76x = 8,034.82 × 1,408.01
  4. Step 4: Simplify right side
    5,356.76x = 11,313,106.91
  5. Step 5: Solve for x
    x = 11,313,106.91/5,356.76
  6. Step 6: Final answer
    x = 2,111.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.